I had this same issue over and over again using Internet Explorer. I had to switch to Google Chrome and then I was able to get them. Unfortunately, I lost out on the great seats I thought I was getting because of the screen freezing issue.

Every time I search seats it pulls up a block for me but the screen is shaded and I cant hit "I want these seats" or "no thanks" then it times out on me and I start over. The same two groups keep coming up. Does that mean I'm in the queue if someone else doesn't want them? If so why do the same ones keep popping up but I cant select them??